linux-kernel - Re: [PATCH v6 1/5] mm/zone_device: Reinitialize large zone device private folios

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Message-ID: <840481e9-d7d1-4063-8772-b717ca915ea2@suse.cz>
Date: Fri, 23 Jan 2026 07:45:01 +0100
From: Vlastimil Babka <vbabka@...e.cz>
To: Andrew Morton <akpm@...ux-foundation.org>,
 Balbir Singh <balbirs@...dia.com>
Cc: Matthew Brost <matthew.brost@...el.com>, Zi Yan <ziy@...dia.com>,
 Jason Gunthorpe <jgg@...dia.com>, Matthew Wilcox <willy@...radead.org>,
 Alistair Popple <apopple@...dia.com>,
 Francois Dugast <francois.dugast@...el.com>, intel-xe@...ts.freedesktop.org,
 dri-devel@...ts.freedesktop.org, adhavan Srinivasan <maddy@...ux.ibm.com>,
 Nicholas Piggin <npiggin@...il.com>, Michael Ellerman <mpe@...erman.id.au>,
 "Christophe Leroy (CS GROUP)" <chleroy@...nel.org>,
 Felix Kuehling <Felix.Kuehling@....com>,
 Alex Deucher <alexander.deucher@....com>,
 Christian König <christian.koenig@....com>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 Lyude Paul <lyude@...hat.com>, Danilo Krummrich <dakr@...nel.org>,
 David Hildenbrand <david@...nel.org>, Oscar Salvador <osalvador@...e.de>,
 Leon Romanovsky <leon@...nel.org>,
 Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 "Liam R . Howlett" <Liam.Howlett@...cle.com>, Mike Rapoport
 <rppt@...nel.org>, Suren Baghdasaryan <surenb@...gle.com>,
 Michal Hocko <mhocko@...e.com>, linuxppc-dev@...ts.ozlabs.org,
 kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
 amd-gfx@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
 linux-mm@...ck.org, linux-cxl@...r.kernel.org
Subject: Re: [PATCH v6 1/5] mm/zone_device: Reinitialize large zone device
 private folios

On 1/22/26 22:41, Andrew Morton wrote:
> On Thu, 22 Jan 2026 20:10:44 +1100 Balbir Singh <balbirs@...dia.com> wrote:
> 
>> >> - Intel has demonstrated that this works and is still getting blocked.
>> >>
>> >> - This entire thread is about a fixes patch for large device pages.
>> >>   Changing prep_compound_page is completely out of scope for a fixes
>> >>   patch, and honestly so is most of the rest of what’s being proposed.
>> > 
>> > FWIW I'm ok if this lands as a fix patch, and perceived the discussion to be
>> > about how refactor things more properly afterwards, going forward.
>> > 
>> 
>> I've said the same thing and I concur, we can use the patch as-is and
>> change this to set the relevant identified fields after 6.19
> 
> So the plan is to add this patch to 6.19-rc and take another look at
> patches [2-5] during next -rc cycle?
> 
> I think the plan is to take Matthew's work via the DRM tree?  But if people
> want me to patchbunny this fix then please lmk.
> 
> I presently have
> 
> Signed-off-by: Matthew Brost <matthew.brost@...el.com>
> Signed-off-by: Francois Dugast <francois.dugast@...el.com>
> Acked-by: Felix Kuehling <felix.kuehling@....com>
> Reviewed-by: Balbir Singh <balbirs@...dia.com>
> 
> If people wish to add to this then please do so.

I did too.

Acked-by: Vlastimil Babka <vbabka@...e.cz>

> I'll restore this patch into mm.git's hotfix branch (and hence
> linux-next) because testing.